MIPS: Octeon: Turn hardware bitfields and structures inside out.

Although the proper way to do this for bitfields would be to use
the macro that Ralf has provided, this is a little easier to
understand as a diff.

Signed-off-by: Paul Martin <paul.martin@codethink.co.uk>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/9628/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>